I am going to build my next full PC for PCI Express, and hopefully, God willing, 64bit CPU as well, a dual core would be even better. I read the single core CPU may be a thing of the past as well. To utilize SLI and 64 bit, Windows Vista will be much better positioned then the current OS platforms, from my recent readings, it should bring the software and hardware gap much closer, as of yet the hardware is now coming out, but the software to exploit it fully is somewhere still down the road. I have high hopes Win Vista can be everything it NEEDS to be, XP has been very useful, but of course, there are flaws in virtually any OS.
I doubt I'll be using anything other then Windows

BILL